<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>2.姓名案例_computed实现</title>
        <!-- 引入Vue -->
        <script type="text/javascript" src="../js/vue.js"></script>
    </head>
    <body>
        <!-- 准备好一个容器-->
        <div id="demo">
        姓:<input type="text" v-model="firstName"></br>
        名:<input type="text" v-model="lastName"></br>
        全名:<span>{{fullName}}</span>
        </div>
    </body>

    <script type="text/javascript">
        //阻止 vue 在启动时生成生产提示。
        Vue.config.productionTip = false
        new Vue({
            el:'#demo',
            data:{
                firstName:'zhang',
                lastName:'san',
            },
            computed:{
                fullName(){
                    return this.firstName +'-'+ this.lastName
                }
            }
        })
    </script>
</html>